Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 9 - Section 9.1 - The Ellipse - Exercise Set - Page 968: 86

Answer

makes sense

Work Step by Step

This statement makes sense because the sound will be reflected by the elliptical wall between the two foci, not in other directions.
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